Saw-setting machine



(No Model.)

H. L. BOSS. SAW SETTING MACHINE.

No. 594,693. Patented Nov. 30, 1897.

WITNESSES:

ms NORRIS PETEflS cu. Pnonxumq, WASHINGTON. n. ::v

NITED TATES ATENT rerun.

, HENRY L. BOSS, OF \VATSONVILLE, PENNSYLVANIA.

SAW-SETTING MACHINE.

' SPECIFICATION forming part of Letters Patent No. 594,593, datedNovember 30, 1897.

A fi ti i fi1 d'J'une 11, 1896. Serial No. 595,106. (No model.)

T0 at whom, it may concern:

Be it known that I, HENRY L. BOSS, a citizen of the United States,residing at VVat-sonville, in the county of McKean and State ofPennsylvania, have invented certain new and useful Improvements inSaw-Setting Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to saw-sets.

My object is to provide a more powerful and satisfactory saw-set adaptedfor treating a variety of saws and effecting in all cases a highlysuperior set of teeth without any danger of their cracking or breaking.

The invention consists of certain novel features and combinations, aswill appear more fully hereinafter.

In the accompanying drawings, Figure l is a side elevation of thecomplete invention, showing the gage; Fig. 2, a side elevation of myimproved saw-set, showing one side removed; Figs. 3 and 4E,cross-sectional views showing the invention used in connection with astraight saw and a circular saw, respectively.

A and B designate the two sides of the sawset, the former of whichcarries the operative mechanism, while tliellatter simply serves ascorners 6 and 7 are rounded. This plate has straight edges adapted tobear against the saw and holdit firmly in position, being capable of asliding movement on the side A. This side A is provided with three ears8, 9, and 10, all of which receive adj usting-screws.

Adjusting-screws 11 and 12 are adapted to adjust the set-platevertically, and that designated 13 is adapted to set it against the saw,so that any desired position of the setplate is rendered possible. Theadjustingscrew 13 is preferably provided with a handwheel 14 and ajam-nut 15.

On the opposite side of the slit in the side adapted to fit in notches23 of the die.

' shown.

on this tooth-rest when the saw is in position.

My improved die 20 is adapted for a sliding movement between thetooth-rest and the guide-ear 17. This die has one end beveled, as at 21,to fit the bevel on the set-plate, while its other end 21 is concaved,so that it and the set-plate may be reversed and a curved set given tothe saw-teeth when desirable. This die is normally retracted, as shown,by a flat spring 22, having its free end The upper edge of the die isprovided with a recess-thereby forming two shoulders 24 and 25.

The means for operating the die consists of a compound lever composed oftwo levers 26 and 27, connected by links 28 and pivoted to the side A insuch position that the end of the upper lever 26 is adapted to work inthe recess in the die and engage with one ofthe shoulders when properlyactuated. The lower lever is provided with a suitable handle, as Thestroke of the levers is regulated by an adj Listing-screw 29. I alsofind it desirable to employ a hand-lever 30, which is fulcrumed to theside A, as shown, and used for the purpose of relieving orcounterbalancing the strain brought to bear on the saw when the compoundlever is depressed.

A gage is connected to the side B. This gage consists of a plate 31,provided with a longitudinal slot 32 and having an outwardlyextendingarm 33, provided with a rest 34, which extends across the saw-slot. Ascrew and washer 35 are the means for holding the gage in properposition.

The operation is as follows: If a straight saw is to be set, the gage isremoved. The saw is then inserted in the saw-slots until the saw-teethrest against the tooth-rest. The set -plate is adjustable vertically bythe screws 11 and 12 until it has been brought in proper position and isheld snugly, yet easily, between them. The adj llShlIlg-SCPQW 13 is thenturned, the same causing the set-plate to advance and serving to clampthe said plate firmly against the saw, so that the saw-set is heldtightly in position during the setting operation. The hand-lever shouldnow be depressed to counterbalance the strain to be encountered. Thecompound lever is then operated, which actuates the die and presses thesaw-tooth firmly and evenly against the set-plate. The clamping-screw 13is turned back slightly to release the set-plate, which can slidebetween the tips of the screws 11 and 12. The saw-set can then be slidalong the saw in any position to set the next tooth, and after the screw13 has again been turned and the saw clamped by the said plate theoperation may be repeated. If a circular saw is to be set, the gage isreplaced. After the saw has been properly inserted in the saw set thegage is adjusted so that its rest lies on top of the second tooth fromthe one being set. This materially assists in holding the saw in placeafter it has been clamped in position by the set-block in the mannerheretofore described. After one tooth has been set the saw is advancedand the operation repeated.

It will be observed that owing to the construction and cooperation ofthe tooth-rest 18, the spring 19, and the anvil 3, no matter what theposition of the anvil, the tooth-rest will always be pressed against itby the spring, and when the anvil is adjusted the tooth-rest moves withit. This spring and tooth-rest form an important part of the presentinvention, as there is no liability of a space being left between theend of the tooth-rest and the anvil after a saw has been removed afterbeing set, for if a space were occasioned when the next tooth would beset there would be a liability of its point being bent out of shape overthe upper edge of the anvil.

Having thus described the invention, what is claimed as new is 1. In asaw-set, the combination with a casing or body having an opening toreceive the saw, of a combined anvil and saw-clamp located on one sideof the slot, means for moving the said anvil and clamp across the slot,a setting-(lie located on the other side of the slot from the saw-clamp,and means for moving said die.

2. In a saw-set, the combination with the saw-set casing or body, of amovable combined saw-clamp and anvil having die-faces, means foreffecting adjustment of said plate both longitudinally and transverselyof its length, a setting-die adapted for cooperation with the die-facesof the set-plate, and means for actuating said die.

In a saw-set, the combination with an adjustable set-plate havingdie-faces, of a movable tooth-rest, abutting on the set-plate andactuated by the movement of the latter, a setting-die for forcing theteeth against the set-plate, and means for actuating the settingdie,substantially as described.

at. In a saw-set, the combination with an adjustable set-plate forclamping the saw in position, and which serves as an anvil, of aspring-pressed tooth-rest, abutting on the set-plate and actuated by themovement of the latter, a setting-die, and means for actuating thelatter, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

HENRY L. BOSS.

\Vitnesses:

E. W. MULLIN, Jr., J. P. MULLIN.

